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[Bug middle-end/44576] [4.5/4.6 Regression] testsuite/gfortran.dg/zero_sized_1.f90 with huge compile time on prefetching + peeling
- From: "borntraeger at de dot ibm dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 25 Jun 2010 09:02:51 -0000
- Subject: [Bug middle-end/44576] [4.5/4.6 Regression] testsuite/gfortran.dg/zero_sized_1.f90 with huge compile time on prefetching + peeling
- References: <bug-44576-18712@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #3 from borntraeger at de dot ibm dot com 2010-06-25 09:02 -------
Created an attachment (id=21001)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=21001&action=view)
Potential fix for compile time regression
Here is a potential fix. We just limit prefetching to loops with a "low" amount
of memory references and bail out if the amount of references is too large.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44576